[Bug 17727] Rendering errors in Firefox and OpenOffice with EXA on R200

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17727





--- Comment #10 from Roland Scheidegger <sroland at tungstengraphics.com>  2008-09-23 06:26:47 PST ---
(In reply to comment #8)
> I find it interesting that all three log files there and here show (a derivate
> of) the original R200 GPU, as opposed to an RV2[58]0 variant. Maybe the radeon
> driver EXA RENDER acceleration code doesn't correctly handle some texturing
> related quirk of the original R200.
Interesting indeed. The original bug reports though about these quirks in the
3d driver were about lockups, not misrenderings (I'd think though it could be
possible depending on other state). Also, one of the workarounds in the 3d
driver (the "T0 hang") can't apply here, since it doesn't kick in with plain
nearest or linear filtering. The other one ("Texture cache LRU hang") though
potentially could as it's applied unconditionally (apparently noone could
figure out in which cases it's needed). There could, of course, be more bugs
which don't show up in the 3d driver for some reason too.


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